Saw-setting device



(No Model.) 2 SheetsSheet 1.

O. G. TAINTOR.

SAW SETTING DEVIG B.

No. 390,718. Patented Oct. 9, 1888.

(No Model.) 2 SheetsSheet 2.

G. 0. TAINTOR.

SAW SETTING DEVICE.

No. 390,718. Patented 001;. 9, 1888.

UNITE STATES PATENT rFicE.

CHARLES C. TAINTOR, OF ELIZABETH, NEW JERSEY.

SAW-SETTING DEVICE.

SPEClPICATION forming part of Letters Patent No. 390,718, dated October9. 1388- Application filed December 19, 1887. Serial No. 258,295. (Nomodel.)

To aZZ whom, it may concern.-

Be it known that I, CHARLES C. TAINTOR, a citizen of the United States,residing at Elizabeth, Union county, New Jersey, have invented certainnew and useful Improvements in Saw-Sets, fully described and representedin the following specification and the accompanying drawings,forming apart of the same.

This invention consists in the combination,

- with the head of a tool and a handle pivoted thereon, of an anvilhaving a corner adapted to fit against the base of the tooth, a rotatingjaw fitted to a segmental seat concentric with the corner of the anviland having a radial bending-face, and means actuated by the handle forpressing the corner of the anvil against the center of the rotating jawto clamp the sawblade, and rotating thejaw in its seat to bend thetooth.

Several forms of myinventiou are shown in the annexed drawings, inwhich- Figure 1 is a plan view of a saw-set, showing the clamp androtating jaw actuated by separate levers. Fig. 2 is a section of thesame on line or a in Fig. 1. Fig. 3 is a front end view of the same;Fig. 4, a side view of the head for holding the operative parts; Fig. 5,a side view,'and Fig (3 a front view, of the rotating jaw detached fromits holder. Fig. 7 is a side view in vertical section at the center ofthe jaw holder constructed as a clamp. Fig. Sis a front end view of thesame. Fig. 9 is a side view in section near the middle line ofa saw-setin which a single hand-lever is linked to the rotating jaw, and throughit moves the saw-clamp in the desired manner. Fig 10 is a similarlongitudinal section of a saw-set in which the clamp is actuated by acam-lever, and the rotating jaw is actuated by a leverarm pressedagainst a tongue upon the jaw. Fig. 11 is a longitudinal section similarto Fig. 2 of a saw-set in which the clamp is first moved and the jawthen rotated through the agency of a sliding pin actuated by ahandlever. Fig. 12 is a side view, and Fig. 13 a front view,of therotating jaw shown in Fig. 9.

The rotating jaw for bending or setting the tooth is shown detached inFigs. 5 and 6, and consists in a semicircular block of metal, a, adaptedto fit a semicircular seat, and provided with a turning arm by which itmay be rotated.

The block is shown with semicircular recess a upon opposite sides,forming an annular rib, a by which it may be held in its seat.

The holder (2, as shown in Figs. 7 and 8, consists in a block havingsemicircular seat 12 formed therein and provided, if fitted to therecess a, with semicircular cheeks b, which are produced by suitablemilling-tools and serve to hold the jaw in its seat. One of the cheeksis made separate and attached by rivets r In Fig. 6 a row of dottedsawteeth, 0 is represented with their bases on a line with the center ofthe rotating jaw, the center of one tooth lying in the middle of thejaw, so that the tooth may be bent by the rotation of the latter whenclamped by a suitable anvil at the level of the base. Fig. 2 shows suchan anvil, c, the saw-blade being shown at c, with a bent tooth formedthereon at 0 and the holder d, which carries the jaw, being held movablybefore the anvil to clamp the saw thereto. The holder thus serves as aclamp, and is provided with ashank, d, which is fitted to a guide, 6, inthe head f, which carries the operative parts of the tool.

The shank is provided with a spring, a, to hold the clamp and jawnormally from the anvil, and a hand-lever or handle, g, is pivoted uponthe head and provided with a cam-face, g, fitted to the rear of theshank to press it forward. The arm a upon the rotating jaw is actuatedby a push-rod, h, and hand lever, and crank, h, pivoted to the headadjacent to the handle A wire spring, a", is fitted to the two outersides of the holder at and arched across the front of the arm a, to holdthe rotating jaw I normally in its operative position, as shown in Fig.2. The holder and jaw are shown retraeted from the anvil,with thehandles 9 and h expanded prior to clamping the saw-blade.

The spring 6 is indicated in dotted lines onlyin Fig. 2, but is shown infull lines in Figs. 7 and 8, and partiallyin Fig. 3, the sides of theholder being clear of the plates f sufficiently to introduce suchspring.

A seat, 1', is formed upon the head and a spring, j. inserted betweensuch seat and the handle h, and the springs are so proportioned to theleverage of the handles that when the handles are pressed together thespring e first yields and the clamp d is pressed toward the anvil by thehandle 9, the cam-face y then serving to lock the clamp, while thecontinued movement of the handles toward one another compresses thespringj, and the handle h then pushes the rod it forward and turns therotating jaw around, as indicated by the dotted lines a.

In the construction shown in Figs. 1. to 1, inclusive, the head fconsists in two flat plates by the guidec and the anvil or anvil-seat,and by a piece, which serves for the spring-seat i and for the guide atat the rear end of the Shank d.

Upon the head at opposite sides are fixed two threaded sockets, k,through which screws Z are fitted, and are provided with gagepieces Z attheir lower ends, against which the points of the saw-teeth may restwhen the set is fitted thereto, as shown in the section of the sawbladeat c in Fig. 3.

The gagepieces are preferably formed of celluloid, rawhide, or analogousmaterial, formed with a shank, Z, fitted into the lower ends of thescrews Z, the toughness of such ma terial preventing it from wearingunder the contact of the teeth. The views from 9 to 13, inclusive, showalternative constructions embodying the same invention, the first illustrating the operation of a single hand-lever in moving the clamp andthen the rotating jaw, as required.

The combined clamp and holder L1 in this construction is fitted betweenplates f, furnished with ribs 0 to guide the holder. The plates areconnected by the lower handle, 9, the inner end of which is providedwith an anvil, c, and the rotating jaw a is provided with an arm, a,which is linked to a spring, a, affixed to the outer side of the holder(2.

The jaw and the arm (0 are shown separatelyin Figs. 12 and 13.

The handle h is connected by a link, It", with the arm (0", and whenpressed toward the handle g operates (owing to the resistance of thespring a) to first draw the clamp and jawholdcr (1 toward the anvil 0",and then, when the saw-blade is clamped, to turn the rotating jaw tobend the teeth, as desired, but toward the handles, instead ol'away fromthe same, as shown in Fig. 2.

In Fig. 10 the operation is substantially the same as in Fig. 2 so faras the means for moving the clamp and jaw-holder are concerned, whilethe means for rotating the jaw is slightly different, being simplifiedby the omission of the push-rod 71 The handlever g and cam g operateupon the shank d of the holder and clamp d to clamp the saw, as in Fig.2; but the handle h is provided with a finger, h", which pressesdirectly upon an arm, a extended from the rotating jaw toward thefulcrum If of the handle h. A stop, 9, is shown upon the handle 9 inFigs. 2 and 10 to limit the movement of the handle, and only a singlespring, j, is required in the construction shown in Fig. 10, asthemeehanical power of the cam g isso much greater than that of thefinger it" that the pressure of the handles toward one another operatesmost effectively to move the clamp, and, after the clamp is closed, torotate the jaw a.

In Fig. 11 the jaw-holder, the shank, and the anvil are arranged similarto those in Fig. 2; but thejaw is rotated in the holder by a bentpresser, p, which is fitted at one end to a hollow socket, s, at theback of the holder and at its forward end, .9, against the arm a". Apush-rod, p, is fitted to guides 1', between the plates f, and a spring,q, is inserted between the holder and the presser to hold the samenormally back from the arm a. The handle and its crank end it operate,when pressed upon the rod, to first push the holder forward to clamp thesaw-blade c, and to then compress the spring q and to rotate the jaw byti pping the presserp, asindieated by dottedlines in Fig. 1.1.

In all the constructions shown the agent for bending or setting thesaw-tooth is the rotating jaw a, fitted to a semicircular or segmentalseat, and therefore turning independently of any hinge or pivot, theanvil in all cases being provided with a corner opposite the center ofthe rotating jaw, so that the latter may operate in exact conjunctionwith such corner in bending the tooth over the same. The clamp whichpresses or grips one side of the saw-blade also acts as the holder forthe rotating jaw, the metal at each side of the 1101- low segmental seat(as appears in Fig. 8) operating as the clamp and holding the sawbladein close contact with the face of the rotating jaw and its center ofrotation.

The essential parts of my invention are therefore a clamping-anvil and abendingjaw rotated in a segmental seat concentric with the base of thetooth and corner of the anvil, so that its operative face may bear uponthe whole side of the tooth during the bending operation, and actuatingmechanism adapted to first clamp the saw and then rotate the bending-jaw, as required.

The bending-face of the rotating jaw is preferably radial to the curvedseat in which it rotates, and the corner of the anvil over which thesaw-tooth is bent is formed upon a level with the center of such seat,although it does not coincide literally therewith when the sawblade isinterposed between the clamp and anvil.

The curved seat and the rotating jaw are, however, concentric with thecorner of the anvil when placed in contact therewith, and are claimedherein as concentric therewith, as the introduction of the saw-bladeproduces no injurious effect by removing the corner of the anvil fromthe center of the curved seat.

The operation of the rotating jaw fitted to a segmental seat concentricwith the base of the tooth would obviously be the same if it were IIOheld in a stationary holder and the anvil moved toand from the same toclamp the saw blade.

I am aware of United States Patent No. 320,753, issued June 23, 1885,for a saw-set containing a pivoted disk formed with two or more fiatsurfaces arranged obliquely to the radial line at different angles andcombined with notches in the edges of the disk, to which ahandle may beapplied and any of the inclined surfaces used at pleasure to bend thesaw-tooth at a certain angle. In such construction there is nobending-jaw having a radial surface nor any anvil having a cornerpressed toward the center of the seat in which the bending-jaw rotates.The bending-agency therefore slides over the side of the saw-toothduring the bending operation, while in my construction the bending-jawturns with the tooth around the corner of the anvil.

I amalso aware of United States Patents No. 237,799, dated February 15,1881, and No. 282,304, dated July 31, 1883, and I do not, therefore,claim the combination of a clamp and a bendingjaw, broadly, but only abending-jaw fitted to a segmental seat and having a radial surface andoperating with an anvil having a corner fitted to the center of thesegmental seat to clamp the sawtooth before it is bent.

Having thus set forth my invention, what I claim herein is- 1. Thecombination, with the head of a tool and a handle pivoted thereon, of ananvil having a corner adapted to fit against the base of the tooth, arotating jaw fitted to a segmental seat concentric with the corner ofthe anvil and having a radial bending-face, and means actuated by thehandle for pressing the corner of the anvil against the center of therotating jaw to clamp the saw-blade and rotating the jaw in its seat tobend the tooth, as and for the purpose set forth.

2. In a saw set, the combination, with the head of the tool and a handlepivoted thereon, of a rotating jawfitted to ascgmental seat in a movableholder, an anvil fitted adjacent to the holder with its cornerconcentric with the curved seat, and means actuated by the handle forfirst moving the holder toward the anvil to clamp the saw-blade and thenrotating the jaw in its seat to bend the tooth, substantially as hereinset forth.

3. In asawset, an anvil, clamp, and a bending-jaw fitted to a segmentalseat concentric with the corner of the anvil and having a radial faceadapted to bend the saw-tooth over the corner of the anvil, and a handleoperated to actuate the clamp to lock the same in its operative positionand to then rotate the bending-jaw, as and for the purpose set forth.

In testimony whereofl have hereunto set my hand in the presence of twosubscribing witnesses.

CHARLES C. TAINTOR. Witnesses:

THOS. S. CRANE, L. LEE.

